Finding the Fourth Proportional to 128,516,608,135.80, 192,774,912,203.70 and 89,334,526,087.80
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Solution
The fourth proportional to 128,516,608,135.80, 192,774,912,203.70 and 89,334,526,087.80 is: 134,001,789,131.70
Step by Step Solution
- Step 1: Write the proportion equation
128,516,608,135.80 : 192,774,912,203.70 = 89,334,526,087.80 : x - Step 2: Convert to fraction form
128,516,608,135.80/192,774,912,203.70 = 89,334,526,087.80/x - Step 3: Cross multiply
128,516,608,135.80x = 192,774,912,203.70 × 89,334,526,087.80 - Step 4: Simplify right side
128,516,608,135.80x = 17,221,455,423,334,793,609,216 - Step 5: Solve for x
x = 17,221,455,423,334,793,609,216/128,516,608,135.80 - Step 6: Final answer
x = 134,001,789,131.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.